Automobile-headlight lens.



1. B. SUESS.

AUTOMOBILE HEADUGHT LENS.

APPLICATION FlLED DEC,10, 1918.

Patented Apr. 29, 1919.

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narran sacarse recrear cistrono JOHN B. SUESS, OFSEATTLE, WASHINGTON.

AUTOMOBILE-Haumann LENS.

Patenten npr, ee, wie;

31,302,239., Specification of Letters Patent. ncpntion mea December 1o, 191e. serial no. 266,302. To all 'whom it may concern.'

Be it known that I, zen of the Tlnited in the county of ington, have invented a certain new and useful Improvement in Automobile-Headlight Lenses, of which the following is a specilication.

My invention relates to improvements in automobile headlight provement in the lens disclosed and described in my prior Patent Number 1,269,978 issued June 18, 1918; and the object of my invention is to provide lens which shall be adapted to constitute the front wall of a amp casing and which shall be of such design that it will eliminate the glare from bright lamps and will diffuse and soften the rays of light and at the same-time distribute such rays of light in a manner that will best serve to illuminate the roadway without blinding persons in front of the lamp.

A further objectl is to provide a headlight lens in the center of which is formed a rela tively small concave divergent lens of clear glass that servesto transmit direct rays of light from a lamp 'JOHN B. SUEss, citi States, residing at Seattle,

, rear thereof and distribute such rays over isv which like reference numera s f prisms 5 which are the `roadbed in 'front' of the lamp, the

greater part of the reflected rays Vof light Vthat issue from the-lamp passing through the outer portions of the headlight lens that surround the small outer ortions are of such form `and structure t at they serve to soften and diffuse such reflected rays of-light.' f

l accomplish these objects by devices illustrated in the accompanying drawings, wherein 'Y v Figure 1 is constructed lin tion; and Fig. 2 is a' view in'cross-section of the same on lbroken line 2, 2 of Fig. 1.

eferring toA the drawin throughout 'indicate like parts, the numeral 3 designatesa lens comprising a circular glass plate whose front surface issmooth and dat and whose rear surface throughout the'i greater part' of its area is provided with integral triangular disposed vertically Aeach parallel with ea'ch other', the bases of adjacent prisms being contiguous. l e prisms 5 thus disposed form corrugations covering substantially the entire a view in elevation ofv a lens accordance wlth my inven- King and State of Wash-V lenses and 1s an impositioned adjacent the divergent lens whichl surface of one side of the headlight lens and serve to deflect and diffuse rays of light projected therethrough from a lamp disposed at a distance'from the rear surface of the lens and to cause such rays of light to beevenly distributed over the surface and to the sides of the area in front of the lamp.

.A en my lens is disposed in an automobile lamp casing having a parabolic re- Elector the smooth surface of the headlight lens is turned outwardly while the corrugated surface is turned inwardly and the lamp or electric bulb which serves as a source of light is preferably placed in the focus of the parabolic reflector, the axis of the parabolic reflector being disposed to pass through the lamp bulb and through the center of the headlight lens.

Formed in the center andA preferably integral therewith is a relatively small plano-concave diverging lens 6 which is formed by buling or rounding out the rear or corrugated surface of the lens as more clearly shown in Fig. 2.

of the headlight lens indicated at 7 as by sand blasting or grinding the central area `of the headlight lens and 'surrounding the diverging lens The transverse overall dimension of the frosted central portion 7 in a horizontal line being substantiallyl one third of the distance across the lens.

In order to soften and diHuse the diverging rays of light that `are reflected from the reflector through th lens and thus dim the glare of said reflected rays of light, the surface ofthe prisms 5 throughout the area of tlieupper portion are frosted or matted as indicated at 8, the shape of the area f the upper portion 8 being such that its center portion 9 extends downwardly to merge with the upper edge of the central portion 7 while the outer portions 10 extend downwardly'and around the To further eliminate the glare from the' e upper portion ofthe and the outer frosted por-` stantiall'ythe 'shape shown in Fig. 1. When in use thematted portions of lens, and the4 glare` and diiiuse and-distribute the rays of light so that a soft mellow'light is directed outgreater lamp. At he Sametime the light rays 'issuing'Vv directly froml'the source of light 'pass outwardly through the divergentI lens 6; and are directed forwardly to illuminate the roadbed directly 'in front ofthe lamp;

The diverging lens 6 serves mainly to transmit the direct rays oflight from the lamp` bulb while the reflected rays romthe re-v flector vvhiclfrfare the rays that produce the part ofthe blinding e'ect of glare visible to persons in front of the lamp are ycaused to pass through the matted and cor-y downwardly in front of the :neoaaee rugated portions of the lens and are softened f and diffused thereby? What l claimis: y y

headlight lens comprising a glass plate having a small transparent integrally formed l' diverging lens in its center, 'a matted section of substantially one-third the ili'ameter of the headlight lens surrounding said central diverging lens,l a matted section extending across the bottom of said headlight. lens, and a matted section at the upper portion of said headlight lens and extending around the outer portion of said headlightlens to substantially the horizontal axis thereof, the medial portion of said upper matted section extending said central matted` section.

In witness' whereof, l hereunto subscribe my name this 4th day of December A. iD.

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downwardly and merging with 

